Scale.



A. P. JOHNSTONE.

SCALE Arumnmn TILED IA! 2a. 1909.

Patented Apr.5, 1910.

4 SHEETS-SHEET 1.

INVENTOB .flnfoz'ne Bloimsione [fill/M ATTORNEYS mum-mam WYWVIAIIINGMDJ,

A. P. JOHNSTONB.

SCALE.

APPLICATION FILED MAY 22, 1909.

Patented Apr. 5, 1910.

4 SHEETS-BEBE)? 2.

A. P. JOHNSTONE.

SCALE.

APPLICATION rILnn MAY 22, 1909.

Patented Apr. 5, 1910.

4 SHEETS-SHEET 3.

IN 5 N TOR nZ'm'nePJo/vnafone ATTORNEYS WITNESSES u WITNESSES A. P.JOHNSTONE.

SCALE.

APPLIOATIDR 1-11.21: Mn 22, 1900.

Patented Apr. 5, 1910.

4 SHEETS-SHEET 4.

INVENTOR ATTORNE 78 ANTOINE IE'. JOHNSTONE, OF CLEVELAND, OHIO.

SCALE.

Specification of Letters Patent.

Patented Apr. 5, 1910.

Application filed May 22, 1909. Serial No. 497,693.

To all whom it may concern:

Be it known that I, AN'roDIE P. JOHNS- rosn, a citizen of the UnitedStates, and a resident of Lakewood, Cleveland, in the county of Cuyahogaand State of Ohio, have invented a certain new and useful Improve mentin Scales, of which the following is a full, clear, and exactdescription.

The principal objects which the present invention has in view are: toprovide a weighing scale having a pouring attachment to deliver onlywhen a receptacle is in receiving position; to provide a pouringattachment for such a scale adapted to be adjusted above the platform ofthe scale; to provide a locking attachment for the scalebcam to preventthe flow from the pouring device, except under certain ci'nnlitions; toprovide a pouring attachment adapted to handle plastic and drymaterials, and provided with varied spout openings; and to provide anelectrically-operated mechanism for terminating the delivery from thepouring device when the desired weight has been obtained.

One embodiment of the present invention is illustrated in theaccompanying drawings, wherein like characters of reference indicatelike parts in all the views.

Figure l a side elevation, partly in section, of the scale and thepouring attachment constructed in accordance with my in vention; Fig. 2is an enlarged view in vertical section, similar to that shown in Fig.l, the section. being taken on the line 2-2 in Fig. 5; Fig. is asectional view of the housing for the electric contacts, the sectionbeing taken on the line 3-3 in Fig. 2; Fig. 4% is a detail view inelevation, of the locking trigger and mounting therefor, the scale beambeing shown in section on the line t-l in Fig. 2; Fig. 5 is a plan viewof the table on which the scale is mounted; Fig. (3 is a detail view inside elevation of the hopper and supporting frame thereof, and theejecting and closing mechanism therefor, and Fig. T is a detail view inplan of the pouring spout and the cut-off gate therefor.

The scale proper is suitably mounted upon a table 8, supported on ayoke-frame 9 which extended from either side of a jack 10. mounted in astandard 11, the base 12 of vided with suitable rack teeth with which a.pinion 13 is in toothed engagement. The pinion 13 is secured on a shaft14, upon which is likewise secured a ratchet 15 and a crank 16. Thestandard 11 is held in position by side braces 17, and upon one of thesebraces is mounted a pawl 18, which engages the teeth of the ratchet 15,being impelled thereto by a leaf-spring 19.

The table 8 is steadied in its adjusted po sition by slotted uprights20, provided with slots 21, through which bolts 22 extend, to be engagedby wing nuts \Vhen the wing nuts are turned hard against the side of thestandards 20, the table 8 is held rigidly in position. The purpose inadjusting the table 8 verticall Y in the manner described, is to varythe istance between the table 8 and a cross-beam 24 upon which a frame25 is supported. To receive the frame 25 brackets 26 are provided.

From the frame 535 is extended a bracket- :27. to which is rigidlysecured a hopper 28, extended through a ring provided in the lowermember of the frame 25, to receive the said hopper, as shown in Figs. 1and G of the drawings. The hopper 28 is further secured in position byan extension 2.) of the cross-beam The hopper 25 is thus mounted rigidlyin position, and the center of the nozzle 30 of the hopper is extendedoutward to alino with the router of the platform 31 of the scale mountedupon the table 8. The nozzle 30 may vary in size, this variation beingaccomplished by the substitution of dillcrcnt nozzles having differingopenings. In each case the nozzle is screwed in position upon a collar32 extended just below a valve seat 32; the opening in the valve seat 33being normally closed l. y a ball 34, attacl'iei'l to a shaft 35 bybeing screwed upon the end thereof. Surround ing the shaft 155 is a tube34", upon which is projected a suitable wide flanged worm 37. The tube:30 is adjustably mounted on the shaft 35, being sccurul in positionthereon by a set nut :38. Upon the same shaft 35 is an agitator 31$).likewise adjustably mounted and secured in position by a set nut 40. Theworm 37 and the agitator 39 are secured on the shaft 35.

The shaft 35 is connected to a shaft 41,

which is suitably secured to the floor or i by being fixedly hold in oneof the members counter, as desired. The jack 10 is pro- 42 of a flexibleor knuckle connection 43,

the attachment being effected between the shaft 35 and the member 4-2 bymeans of a set screw ii. The upper end of the shaft 41 is serrated toform crown ratchet teeth 43. and the shaft 41 is slidably and gnidablymounted in the outer end of a bracket to. The bracket. it has the threeextensions, shown in Fig. 1 of the drawings. At the outer end of each ofthe extensions are formed bearings. one for the shaft ll as dcscribcd.another for a short shaft connected with a miter gear 4-1", and anotherfor a miter gear by means of this construction, the miter gears 47 and48 are permanently engaged. The lower extremity of the short shaft uponwhich the miter gear 17 is mounted, is serrated to form crown ratchetteeth 41 shaped to mesh with the teeth 45.

By means of this construction and arrangement. whenever the shaft 41 islifted so that the upper end thereof engages the lower end of the shortshaft carrying the gear 47. the teeth l5 and 49 are engaged, so that therotary motion of the miter gear 47 is imparted to the shafts l1 and 35.The rotary motion mentioned as being imparted to the miter 4T. istransmitted through a shaft 50 which is suitably mounted in a bearing51, and is connected to an electric motor through a flexible shaftconnection 53.

The bracket to and the bearing 51 are integral with an arm fa l.pivotally mounted at as upon the upright of the frame Below the pivot5.": the arm 54 is provided with an extension no. at the lower endwhereof is formed a quadrant slot 57, arranged as l1t \\l1 in Fig. 1 ofthe drawings to unfold a set screw 55". The screw 58 is provided with asuitable washer to extend over the sides of the slot 57. in such mannerthat when the set screw .19 is set up hard against the said washer. thesame jams the sides of the slot against the upright of the frame 25 tohold the arm 51' in rigid position. This adju tment of the arm Tel isfor the pur 'iose of permitting the alinement of the shafts 11 and It?to various size of the hopper 28. or slight disadjustment in the swingof the said shafts.

The engagement between the teeth 45 and All of the shaft 41 and those ofthe mitergcar t? is accomplished by means of a lever on. which isprovided with a cup (30, adapted to receive a hall-joint til formed onthe said shaft ti. This cup and ball connection per mits the shaft 41 torock, to accommodate the movement just above described on the part ofthe arm fi-l. It also accommodates the changing alinement oi' the shaftti and the lever 5H in the rise of the former.

The lever in is pivotally mounted at. (32 in a bracket o l. rigidlysecured on the edge of the hopper 28, The lever 59 is normally loweredto the position shown in Fig. 1 of the drawings by means of anadjustable weight (34. slidably mounted upon a further extension of thelever on and secured in position thereon by a set screw as.

The lever 59 is moved on a. pivot. ti! to raise the shaft l1, to engagewith the shaft mounting the miter-gear ii, i) means of a solenoid (Stl,which is energized by the current passing through wires UT and (38.which are a part of any suitable circuit. The solen old is mounted upona bracket on. which is extended from the frame 25. To the ln'ackct (3S)rigidly secured a rod 70. upon which is slidably mounted a collar T1.The collar 71 is secured in position by a set screw T2 and forms abearing for a small shaft TI). having slidably mounted thereon a pinionit. rotatably held on the shaft 7-; by a feather T5. The pinion T4- isadapted to be shifted from the position shown in full lines in Fig. 1 tothe position shown in dotted lines in the same figure.

The shaft T13 is mounted in hearings to and Ti, and has mounted on theouter end thereof a miter-gear Th. which is held in toothed engagementwith a companion miter-gcar Tll, mounted upon a shaft Ht) depending fromthe lower arm of the frame 25. The miter-gear TS] is rigidly mountedupon an arm 81 of a disk eut-otf 5;, provided with an extension forminga quadrant-slot sa. which is slotted from the center of the shaft 80.'lhrongh the slot H3 is extended a bolt 84, having a head sntlicicntlylarge to engage the sides of the slot Hi). to support the cutotf 82. Thecut-oil H2 is adapted to extend across the opening in the valve-seat :53and below the same, to ett'ectually close the open ing and to catch anydrippings theretrom. lly rotating the shaft T3 the cut-oil H2 is thrownback and forth under the valve-s at :33). as described. The rotarymotion of the shaft T3 is imparted thereto by a gear segment H3.pivotally mounted at St and connected at two with a pitman so, rotatablyconncctcd with the shaft. on.

\Yith an apparatus thus constructed. the operation is as follows:Normally the operative parts are held in the position shown in Fig. l ofthe drawings, wherein the valve ill is seated and the pinion Tl is heldout of contact with the segment 83. \Yhen, as will hereinafter bedescribed. the solenoid till is energized, the core is? is drawn to itsscat within the solenoid. carrying the lever 52) down on the outer sideot the fulcrum on, raising the inner end of the lever with the weighttil and with it the end 1 5 for engagement. with the toothed end 19.lifting the valve 3-1 from its seat and opening the passageway to thedelivery nozzle 30. The motor 52 is continuously operated, driving theshaft. 50 and the miter-gears 17 and is. Hence, when the engagementbetween the ends and 4:9 transpires, the rotation of the shaft 50 istransmitted to the shaft 35,

U raised to a delivery position.

rotating the agitator 39 and the Worm 37. The worm 37 operates to forcedownward the contents of the hopper 28, to compel the same to be emittedconstantly from the nozzle of the hopper. hen the solenoid 66 isdenergized, the reversal of the abovedescribed actions transpires. Thisreversal returns the parts to the position shown in Fig. 1 of thedrawings, wherein the valve 8% is suitably seated on the seat 33. \Vhennow the pinion Tl is thrown into the position shown in dotted lines, theaction of the falling core 87 through the pitman 8t produces an actionon the part of the segment 83, the pinion and the miter-gears T8 and75), to throw the disk cut-oft 89. across the path of the valve-seat. Itwill be ob served that this has the eli'ect of closing the valve-seatopening when the valve 3 f is This is intended to provide for theremoval of the shaft and parts connected therewith, which is usuallyperformed when it is desired that the hopper 38 be cleaned. hen thiscleaning is accomplished, the shaft 35 may be removed by releasing theset-screw i l and raising the shaft ll to free the top of the shaft whenthe same may be lifted out of the hopper 28, leaving the same accessiblefor cleaning purposes.

The present invention is primarily in tended as a measuring device forheavy oils, paints or oil mastics, and, when desired, a solvent such asbenzin is employed for cleaning. The facility with which this deliveringmechanism can be cleaned is a great advantage in the present invention,as the time saved in this operation forms the difference between asuccessful machine and one that is not a success. hen the parts havebeen cleaned, the soiled solvent is delivered into a suitable receptacleby the removal. of the disk 82 from the passage. The cleaned shaft 35with the agitator and worm, are then inserted in the operative positionand coupled to the shaft all, and the apparatus now in its initialcondition. The pinion T4 is now moved back to the position shown in fulllines in Fig. 1, wherein it is not, engaged by the segment 83, and theshaft T3 remains immovable.

The core 87 is attached to the lever 59 by an adjusting arm 88, slidablymounted upon the outer end of the lever 59 and secured lixedly inposition thereon by a set-screw 8E). The core 87 is connected to the arm88 by a collar 90, to which it is connected by an insulated flexibleconnection ill. The collar 90 is fixedly attached in its adjustedposition upon the arm 88 by a setnut 92.

In many instances, such, for instance, as in the handling of mastics, itis desired that the contents of the hopper 28 shall be liquefied. It isfor this purpose that I have provided a platform 93, which is adapted toextend over the. hopper, as shown in Fig. (3 of the drawings. If theliqucticd eleincnt be. oil, this is stirred into the mastic by theagitator 39 when rotated by the elec tric motor it will be seen that theoperation of the delivering apparatus thus described, is controlled bythe solenoid (ill, which in turn is controlled by the current suppliedthereto from the wires (37 and (18. The wires o? and (as are connectedby suitable binding posts to a. mercury cup ill and the service maincontacts 9G. The wire (3T has inter posed between the solenoid and theservice main contact 97 a cincuit-breaher which in the present:instance, is carbon pencil A5. The pencil U5 is adjustably mounted on anextended rod 98, rotatably mounted in a post 99. The rod 98 is lixcdlyconnected with a small gear 102, by means of a bolt 101 which alsoserves as a pivot for the said rod. The small pinion 102 in toothedengagement with a gear-segment 101). which is fixedly mounted upon theend of an arm 100 and. is pivo-tally mounted at ltll'. \litli theraising and lowering of the arm loo. a comparatively small movement inthe larger segment produces an increased nloicment in the rod 98,because of the diminished diameter of the pinion 10;. By means of thisaction a coniparativcly small movement up and down on the part of thearm lOll produces a quick and lengthened action on the part of thepencil llfi, thcrcby avoiding any arcing between the pencil and themercury cup ill. The scale is so arrange'l that from the carrying end ofthe scale beam, there depends a rod 103. which rests upon an insulatedbutton ltlo, tixcdly mounted upon the arm 100 by means of a set nut 10?.By this arrangemcnt as the scale releascd so that the load-supportingarm is raised, prior to receiving the matcrial to bc weighed, the armHill is rais d. rotating the segment 10?, to cause an opp site rotationof the pinion 10;. which dcprosses the arm SIS and the pencil J3. toimmerse the lattcr in the mercury of the nior cury cup E l. Should theaction of the parts be extended beyond that calculated, the rod 98 whichconstructed of llcxihle matcrial, yields and bends without injury to anyof the parts. \Vith the immersion of the pencil it? in the cup ill, theelectric circuit in the wires (QT and ('18 is completed. cum-giving thesolenoid tit; to draw the core HT and thereby set in operation thevarious instrunicnlalities to deliver the material from tho hoppcr 28 asabove described. When. in the course of its operation, there isdelivered sufficient of the material being measured to depress theload-supporting side of the scale to a level, the arm lOO is depressed.to raise the pencil 9.3 out of contact with the mercury in the mercurycup .ll. This parting of the pencil and mercury cup breaks the circuitflowing through the solenoid (3G and de energizes the same. permittingthe weight (it to depress the valve 3-1 to its seat 3 3 and sep aratethe shafts 41 and 50. thus discontinuing the supply of the materialbeing measured. lt is in this position that the scale is locked, andwhere it normally stands. The locking device for maintaining the scalebeam in the balanced or full weight position. comprises a latch arm'ltlh at the lower end of which is formed a latch head 109. adapted toengage a hook 111). fixedly mounted upon the graduated side of the scalebeam 111. The latch arm 108 is actuated by a leaf spring 112 suitablymounted upon a carrying arm 11; provided for adjusting the latch arm108. The carrying arm 113 is suitably formed to pass the scale beam 111.and is adjustably mounted in a standard 111 which is fixedly mountedupon the table The carrying arm 111' fixed in position as adjusted. inthe standard 114, by a set screw 115. By means of this eonstructitm, thelocking position of the latch head 109 can be nicely adjusted to an playor disparity which may arise in the balance of the scale beam 111.

There provided on the platform 31 of the scale. an adjusting member 116which is a fiat sheet metal construction formed to an angle provided toreceive a an or other article A. when placed upon the scale platform. Itis adjustably mounted upon the scale platform by means of a post 117 anda wing nut 11S mounted therein. Extending through the post 117 andengaged by a wing nut 11H a rod 11?), upon which the adjustiug member116 is adjustably mounted. For this mounting the member 116 is providedwith an elongated extension 120. which passes through a slot in a collar121 fixedl mounted upon the end of the rod 119. The member 116 isdisposed so that when the article to contain the material being measuredis placed upon the platform of the scale. the same fits within the angleof the said adjusting member 1113. Extended from the one side of thescale platform is a set rod 131. which is extended through suitableslide grooves. and therein secured by a thumb nut 12;. This nut isadjusted in position so that whatever is placed in the angle of themember 116 as shown, must force the said member slightly to one side andin doing so move a rod 123. the head 121 of which rests against the sideof the member 116. The rod 123 has fixedly secured thereon small.cylindri 'al bufi'ers 1:25. suitably connected by a. spring 126 and oneof which is secured fixedly to the rod 123 by a. nut 127. The rod 123 isadjusted to suit the conditions under which the scale is operating. Inthis position the outer buffer 125 extends across the opening in thetrigger arm 108.

\Vhen now a scale is constructed and arranged as set forth. the normalposition is that shown in Fig. 1 of the d "awings, wherein the latchhead 10.) under the hook 110 and the weight carr 'ing beam is held inposition thereby. \Vith the introduction on to the scale platform of thecarton A, the member lie is moved against the head 121- of the arm 123.in order that the carton can pass beyond the end of the adjusting member131. I11 doing this. the butter 125 is thrown against. the latch arm1H8. moving the same out of engagement with the hook 110. and allowingthe graduated extension of the scale beam with the hook 110 to fallbelow the latch head 101). In the fall of the graduated extension of thescale beam. which is pivoted at 128. the arm 10.) is raised. causing thepencil 5);) to descend to complete the circuit which energizes thesolenoid on. resulting in the operating of the members within the hopperwhich deliver the material. therein to the carton A. This actioncontinues until the carton has received the full weight when the scalebeam leveling under the weight of the carton depresses the rod 105 tolift the pencil J5. causing the suspension of the deliveringinstrumentalities in the hopper 28. In this position the latch head 10?)again engages the hook 110 and the se: le is in its initial position.

It is to limit and guide the fall and rise of the graduated extension ofthe scale beam that T have provided an adjustable rod 1-10. providedwith bifurcated arms 111. between which the scale beam operates. The rod110 is mounted in a standard 112. which is fixedly secured to the table8. the rod being secured in its adjusted position within the saidstandard by a set nut 11-3. By means of this attaelnnent, the scale isprevented from rising too high to strike the carton A against the nozzle31) and to immerse too deeply within the mercury cup 9 -1. the pencil95.

\Vithin the core recess of the solenoid U6, 1 place a spiral spring 141.the object of which. is to butter the drop of the weighted core 87.

It will be noted that the scale platfm'm is of such construction as toprevent the possibility of the internal mechanism of the scale properbecoming mnssed up or clogged in the event of an accidental spill of thematerial being filled or weighed.

Having thus described my invention, 1 claim as new and desire to secureby Letters Patent:

1. A scale. comprising a holder for the material being handled. adaptedto deliver said material upon a. weighing scale, a delivery spout forsaid holder having a valve seat. a rotatable shaft mounted within saidholder and provided with a member for closing the said valve andprovided With a worm adapted to advance the material. through the saidspout, a stirring device actuated by said shaft to agitate the saidmaterial, and means actuated by said scale for initiating and suspendingthe rotation of said shaft and the seating of said valve.

2. A scale, comprising a holder for the material being handled, mountedto deliver the material upon a Weighing scale, a delivery spout for saidholder having a valve seat, an electric mot or, a transmission mechanismconnected with said motor and extended to said holder. a rotatable shaftmounted within said holder and adapted to be raised to engage with saidtl'illlSiIliSSlOll mechanism, a propelling device mounted on said shaftto advance the said material through the said spent, a valve adapted torest upon said valve seat to move with said shaft, andclectro-mechanical means to raise and lower the said shaft to and fromengagement With the said transmission mech anism. said means beingactuated by a weighing scale.

3. A scale comprising a holder having a delivery spout; a stationaryframe to support said holder; a Weighing scale mounted below said spout;a table to support said Weighing scale; means for adjusting the saidtable vertically; means for closing the said spout; andelectro-mechanical means to open the said spout.

i. A scale comprising a holder having a delivery spout; a stationaryframe to support said holder; a Weighing scale mounted below said spout;a table to support said Weighing scale; means for closing said spout;electroanechanical means for opening said spout to deliver the materialbeing handled upon said scale; and a lock to maintain the balancedposition of said scale.

5. A scale, comprising a holder having a delivery spout to deliver thematerial being handled, a stationary frame to support said holder, aWeighing scale mounted below the said spent, a table to support saidscale means for closing said spout, electro-mechanical means for openingthe said spout to deliver the material to balance said scale, said meansbeing actuated by the said scale when raised from balance, and a lock tomaintain the balanced position of said scale, said lock being adapted tobe released by the carton for receiving said material.

U. A scale, comprising a holder having a delivery spent to deliver thematerial being handled, a stationary frame to support said holder, aweighing scale mounted below the said spout, a table to support saidweighing scale means for closing said spout, electromechanical means foropening the said spout to deliver the material to balance said scale,said means embodying a switch for opening and closing the electriccircuit, means for connecting the said sale with said switch to closethe same when the said scale is out of balance and to open the same whensaid scale is in balance, and a lock to maintain the balanced positionof said scale.

7. A scale, comprising a holder having a delivery spout to deliver themateriat being handled, a stationary frame to sup port said holder, aweighing scale mounted below the said spout, a table to support the saidweighing scale, a driving mechanism, a transmission mechanism connectedwith said driving mechanism and extended above said holder, a rotatableshaft mounted within said holder and adapted to be raised to engage withsaid transmission mechanism, a Worm mounted on said shaft to advance thematerial being handled through the said spent, a valve to move with saidshaft, a seat for said valve in said spout to move with said shaft, alever pivotally mounted to raise said shaft to engage with saidtransmission mechanism, an electric solenoid adapted to raise said leverto engage the said shaft and transmission mechanism, an electric circuitembodying a switch adapted to be opened and closed by the said xveiglning scale and comprising the said solenoid, and a lock to maintain thebalanced position of said scale.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ANTOINE P. JOHNSTUNE.

Witnesses L. Q. RAWSON, MATILDA FISCHER.

